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Finding the Fourth Proportional to 69,739.79, 96,242.58 and 39,528.20

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Solution

The fourth proportional to 69,739.79, 96,242.58 and 39,528.20 is: 54,549.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,739.79 : 96,242.58 = 39,528.20 : x
  2. Step 2: Convert to fraction form
    69,739.79/96,242.58 = 39,528.20/x
  3. Step 3: Cross multiply
    69,739.79x = 96,242.58 × 39,528.20
  4. Step 4: Simplify right side
    69,739.79x = 3,804,296,191.36
  5. Step 5: Solve for x
    x = 3,804,296,191.36/69,739.79
  6. Step 6: Final answer
    x = 54,549.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.